2991723013 has 2 divisors, whose sum is σ = 2991723014. Its totient is φ = 2991723012.

The previous prime is 2991723001. The next prime is 2991723067. The reversal of 2991723013 is 3103271992.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2230956289 + 760766724 = 47233^2 + 27582^2 .

It is a cyclic number.

It is not a de Polignac number, because 2991723013 - 2¹³ = 2991714821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2991723113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495861506 + 1495861507.

It is an arithmetic number, because the mean of its divisors is an integer number (1495861507).

Almost surely, 2^2991723013 is an apocalyptic number.

It is an amenable number.

2991723013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991723013 is an equidigital number, since it uses as much as digits as its factorization.

2991723013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 2991723013 is about 54696.6453541714. The cubic root of 2991723013 is about 1440.9219618309.

The spelling of 2991723013 in words is "two billion, nine hundred ninety-one million, seven hundred twenty-three thousand, thirteen".